December weather forecast in London

December in London is the windiest month of the year. In December, the weather in London is typically cold. Average daily high temperature in December is about 7 degrees above zero. On average, London has 12 cloudy, 10 rainy, 5 partly cloudy, and 4 sunny days in December. The rains are usually moderate. December as well as January, February, March, and June is considered the most uncomfortable time to visit London.